CN203360175U - Novel sewage sub-zero discharge treatment device - Google Patents
Novel sewage sub-zero discharge treatment device Download PDFInfo
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- CN203360175U CN203360175U CN 201320394153 CN201320394153U CN203360175U CN 203360175 U CN203360175 U CN 203360175U CN 201320394153 CN201320394153 CN 201320394153 CN 201320394153 U CN201320394153 U CN 201320394153U CN 203360175 U CN203360175 U CN 203360175U
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- reverse osmosis
- membrane
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Abstract
The utility model relates to a novel sewage sub-zero discharge treatment device which comprises a chemical-membrane filtration treatment device and a high-concentration reverse osmosis treatment device connected mutually, wherein the chemical-membrane filtration treatment device comprises a quick mixer, a slow mixer, a precipitator and a tubular ultrafiltration membrane device; the quick mixer, the slow mixer and the precipitator form an integrated structure; the precipitator is connected with the tubular ultrafiltration membrane device through a pipeline and a pump; on one hand, the tubular ultrafiltration membrane device is connected with a pH regulator, and on the other hand, the tubular ultrafiltration membrane device is connected with the precipitator; the high-concentration reverse osmosis treatment device comprises a reverse osmosis water feeding lifting pump, a cartridge filter, a reverse osmosis high-pressure pump and a reverse osmosis membrane component; one end of the reverse osmosis water feeding lifting pump is connected with the pH regulator and the other end of the reverse osmosis water feeding lifting pump is connected with the cartridge filter; and the cartridge filter is connected with the reverse osmosis membrane component through the reverse osmosis high-pressure pump. The novel sewage sub-zero discharge treatment device improves reverse osmosis pretreatment and reverse osmosis design, so that the recovery rate of reverse osmosis is 90% to 95%.
Description
Technical field
The utility model belongs to water-treatment technology field, relates to a kind for the treatment of unit of Novel sewage, relates in particular to the inferior zero discharge treatment device of a kind of Novel sewage.
Background technology
Water resources is the extremely important and extremely valuable natural resourcess of the mankind.The development of modernization industry and the raising of living standards of the people, trade effluent and sanitary sewage are more and more, and water resources is more and more deficienter.Along with the raising of environment protection importance and the severization of industrial wastewater discharge standard, water technology more and more comes into one's own.
Reverse osmosis (RO) is early fifties, and at first the U.S. begin one's study for solution sea water desaltination problem.Nowadays, aspect water treatment, be widely used.Sea water desaltination, preparation of high-purity water, reverse osmosis can meet the water requirement of people's life, semi-conductor, microelectronics, electric power, chemical industry, medicine and other fields.The today more and more lacked in water resources, reverse osmosis also is widely used aspect wastewater treatment as waste water advanced treatment technology and water resources reuse technology.
General reverse osmosis technology, the rate of recovery is controlled at 75% left and right usually, there is 25% reverse osmosis concentrated water, and reverse osmosis technology is also higher to the requirement of influent quality, be mainly the pollution to reverse osmosis membrane that prevents that in feed water by reverse osmosis, organism and inorganic suspended particle cause, and prevent in feed water by reverse osmosis the fouling on reverse osmosis membrane that the difficulty soluble salt crystallization causes.Therefore, need certain pretreatment technology in reverse osmosis as last.
Use reverse-osmosis treated waste water, the principal element that affects the reverse osmosis rate of recovery is: the scaling fouling of difficulty soluble salt in (1) water; (2) dirt of organism, colloid is stifled; And the pollution of (3) bacterium, microorganism viscosity mud.Wherein, in water, difficulty soluble salt comprises CaCO
3, CaF
2, CaSO
4, BaSO
4, SrSO
4, Mg (OH)
2, SiO
2deng, in water, organism, colloid comprise COD (various organic overall target), Fe (OH)
3, Fe
2o
3, Al (OH)
3, Al
2o
3, colloid SiO
2deng.
The concentrated water discharge of reverse osmosis system 25% is one of subject matter in current reverse osmosis technology application.The one, concentrated water drainage water rate is too high, and water resource waste is large, does not meet the fundamental state policy of water-saving and emission-reducing; The 2nd, increased the unit cost of water processed; The 3rd, in the waste water advanced treatment recovery system, chemical oxygen demand (COD) index in the dense water of RO substantially exceeds the wastewater discharge standard of environmental regulations, makes the dense water of a large amount of RO can arrange nowhere.
In order to improve the rate of recovery, reduce the RO concentrated water drainage high-volume, realize " zero release " of wastewater membrane treating processes, common terms of settlement is to increase/improve pretreatment process to reduce the dense water yield, or dense water out is further processed recovery to reverse osmosis.And adopt vaporizer to be evaporated the dense water of RO, be to use more approach, the investment of vapo(u)rization system is generally at 80～1,200,000 yuan/tons of water, and ton water running cost is generally also more than 30 yuan.
But so-called " zero release " is to be based upon on the basis of complicated technology and great amount of investment, can realize from technical standpoint merely, but sees very not " economy " from economic angle, so just seriously restricted its industrial applications.Therefore, provide a kind of and be easy to realize that the inferior zero discharge treatment device of industrial applications just becomes the technical barrier that this technical field is badly in need of solution.
The utility model content
The purpose of this utility model is to provide a kind of inferior zero discharge treatment device of sewage that is easy to realize industrial applications.
Above-mentioned purpose of the present utility model reaches by the following technical programs:
The inferior zero discharge treatment device of a kind of Novel sewage, comprise chemistry-membrane filtration treatment unit (CMF:Chemical-Membrane Filtration) and high density reverse osmosis treatment device (HCRO:High Concentrate Reverse Osmosis), described chemistry-membrane filtration treatment unit (CMF:Chemical-Membrane Filtration) is connected with described high density reverse osmosis treatment device (HCRO:High Concentrate Reverse Osmosis); Described chemistry-membrane filtration treatment unit comprises fast mixed device, mixed device, settling vessel, tubular ultra-filtration membrane device slowly, described fast mixed device, mixed device and described settling vessel are one-piece construction slowly, described settling vessel is connected with described tubular ultra-filtration membrane device with pump by pipeline, described tubular ultra-filtration membrane device is connected with pH-meter on the one hand, with settling vessel, is connected on the other hand; Described high density reverse osmosis treatment device comprises the feed water by reverse osmosis lift pump, cartridge filter, reverse osmosis high-pressure pump and reverse osmosis film group device, described feed water by reverse osmosis lift pump one end is connected with described pH-meter, the other end is connected with described cartridge filter, and described cartridge filter is connected with described reverse osmosis film group device by the reverse osmosis high-pressure water pump.
A kind of optimal technical scheme is characterized in that: described fast mixed device and mix slowly the stirrer that configures respectively different rotating speeds in device.
A kind of optimal technical scheme is characterized in that: described settling vessel bottom is provided with sludge drainage system.
A kind of optimal technical scheme is characterized in that: described fast mixed device, mixed device and settling vessel use strong corrosion resistant material glass steel to make slowly.
A kind of optimal technical scheme is characterized in that: the internal diameter of the tubular ultra-filtration membrane in described tubular ultra-filtration membrane device is the 5mm(millimeter) or the 8mm(millimeter), 0.04～0.08 micron of filtering accuracy; The cross-flow flow velocity is 2～5m/s(second/rice).
A kind of optimal technical scheme is characterized in that: the reverse osmosis membrane in described reverse osmosis film group device is coiled reverse osmosis membrane, and has the polymeric amide separating layer of cross-linking polyvinyl alcohol (PVA), with ordinary RO membrane, compares, and has stronger antifouling property; Reverse osmosis membrane in described reverse osmosis film group device adopts the dense water graticule mesh of low voltage difference (pressure reduction reduces by 15% than ordinary RO membrane), and dense aquaporin is greater than 34mil.
The utility model has the advantages that:
The utility model has improved reverse osmosis (RO) pre-treatment and RO design itself simultaneously, makes the rate of recovery of RO can reach 90～95%, for sewage treatment area provides a kind of new inferior zero-discharge technology.
The inferior Zero-discharge treating process method of the sewage that the utility model relates to, in chemical treatment, by adding specific precipitation agent (lime, soda ash etc.) and crystal aggregation agent (as polyacrylamide etc.), make various fouling tendency materials in water fully react, contact, collide, generate the suspended solids material, under the effect of crystal aggregation agent, make the complete crystallization of residual harness, form emulsion and do not precipitate, making it to the various fouling tendency materials in water and pollutent, stronger absorption and coagulation be arranged; By crossflow membrane filtration, thoroughly remove the metallic colloids such as hardness in water and iron, aluminium through chemically treated former water, overcome the impact on the fouling of RO film; Control water pH in specific scope, greatly reduce the condition of growing of bacterial micro-organism, effectively overcome the pollution to the RO film of bacterial micro-organism and organism.The ratio of desalinization of HCRO product water is greater than 97%, can fully recovering in industrial production; HCRO system recoveries rate can reach 90～95%, and concentrated water discharge is to the salt solution evaporation tank, thereby realizes inferior zero release.
The utility model is according to the characteristic of water, integrated water treatment method by water technology organic assembling such as chemical treatment, crossflow membrane filtration and reverse osmosis membrane separation, be mainly used in the advanced treatment and reclamation of trade effluent, the dense water of RO, cycle bleeder water, make system backwater rate reach 90～95%, reach quantity of wastewater effluent and minimize.
Below by the drawings and specific embodiments, the utility model is described further, but does not mean the restriction to the utility model protection domain.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model device.
The schematic flow sheet that Fig. 2 is the technique that relates to of the utility model device.
Description of reference numerals:
Pre-treatment 1 ' the chemistry of 0 sewage-membrane filtration is processed
2 ' high density reverse-osmosis treated, 3 ' de-mineralized water
4 ' chemical sludge, 5 ' strong brine
1 tubular ultra-filtration membrane device 2pH setter
3 feed water by reverse osmosis lift pump 4 cartridge filters
5 reverse osmosis high-pressure pump 6 reverse osmosis film group devices
7-1 mixed device 7-2 soon mixes device slowly
The 7-3 settling vessel
Embodiment
Embodiment 1
As shown in Figure 1, structural representation for the inferior zero discharge treatment device of a kind of Novel sewage of the utility model, comprise tubular ultra-filtration membrane device 1, pH-meter 2, feed water by reverse osmosis lift pump 3, cartridge filter 4, reverse osmosis high-pressure pump 5, reverse osmosis film group device 6, mixed device 7-1 soon, slowly mix device 7-2, settling vessel 7-3.
Mixing soon device 7-1, mixing device 7-2 and settling vessel 7-3 slowly is one-piece construction, settling vessel 7-3 is connected with tubular ultra-filtration membrane device 1 with pump by pipeline, tubular ultra-filtration membrane device 1 is connected with pH-meter 2 on the one hand, with settling vessel 7-3, is connected on the other hand; Feed water by reverse osmosis lift pump 3 one ends are connected with pH-meter 2, and the other end is connected with cartridge filter 4, and cartridge filter 4 is connected with reverse osmosis film group device 6 by reverse osmosis high-pressure water pump 5.Mix soon device and mix slowly the stirrer that configures respectively different rotating speeds in device.The settling vessel bottom is provided with sludge drainage system.Fast mixed device, mixed device and settling vessel use strong corrosion resistant material glass steel to make slowly.The internal diameter of the tubular ultra-filtration membrane in the tubular ultra-filtration membrane device is the 5mm(millimeter) or the 8mm(millimeter), 0.04～0.08 micron of filtering accuracy; The cross-flow flow velocity is 2～5m/s(meter per second).Reverse osmosis membrane in the reverse osmosis film group device is coiled reverse osmosis membrane, and has the polymeric amide separating layer of cross-linking polyvinyl alcohol (PVA), compares with ordinary RO membrane and has stronger antifouling property; This rolled membrane module adopts the dense water graticule mesh (pressure reduction reduces by 15% than ordinary RO membrane) of low voltage difference, and dense aquaporin is greater than 34mil.
As shown in Figure 2, the process flow sheet of the inferior Zero discharge treatment method of the sewage related to for the utility model device, it comprises the steps:
(1) chemistry-membrane filtration (CMF:Chemical-Membrane Filtration) is processed:
A. pass through certain pre-treatment (can be that to remove COD and ammonia nitrogen be main purpose one, second-stage treatment, such as coagulating sedimentation, Wastewater Treated by Activated Sludge Process etc.) sewage 0 enters chemistry-membrane filtration treatment step 1 ' processed, this chemistry-membrane filtration treatment step 1 ' processing comprise: be introduced into and be added with the acclimatization agent (as lime, soda ash etc.) and the fast mixed device of crystal aggregation agent (as polyacrylamide etc.) (various fouling tendency substance crystallizations in sewage are separated out, form emulsion and do not precipitate, wherein said precipitation agent and crystal aggregation agent need be selected according to different condition of water quality), stop 15～30min(minute), then enter mixed device slowly, stop 15～30min(minute), enter again settling vessel, stop 15～30min(minute) carry out precipitate and separate, bottom regularly spoil disposal 4 '.
B. the sewage in settling vessel promotes and enters tubular ultra-filtration membrane by recycle pump, adopt tubular ultra-filtration membrane to carry out crossflow membrane filtration to the sewage of above-mentioned chemical treatment, circular flow is 200～400%, the internal diameter of tubular ultra-filtration membrane is the 5mm(millimeter) or the 8mm(millimeter), 0.04～0.08 micron of filtering accuracy; The cross-flow flow velocity is 2～5m/s(meter per second).
C. the drainage after filtering is sent into pH-meter (water tank) and is regulated pH value to 8～10.
D. filtered by tubular ultra-filtration membrane the fouling tendency material and the pollutent that are retained down and brought in settling vessel and continue precipitation process by cross-flow recirculated water, settling vessel bottom timing spoil disposal 4 '.
(2) the high density reverse-osmosis treated 2 ' (HCRO):
A. chemistry-membrane filtration (CMF) water outlet enters the reverse osmosis film group device of feed water by reverse osmosis lift pump, cartridge filter, reverse osmosis high-pressure pump and particular design successively.
B. the feed water by reverse osmosis lift pump is fetched water by pH-meter, and water is delivered into to cartridge filter with the pressure that is not less than 0.3MPa.
C., the PP melt-blown filter that number Zhi Jingdu is 5 microns is installed in cartridge filter;
D. the cartridge filter water outlet is through the supercharging of reverse osmosis high-pressure pump, enter the reverse osmosis film group device, membrane flux is higher than 18LMH, obtain reverse osmosis produced water 3 ' and dense water 5 ', high density reverse-osmosis treated (HCRO) system recoveries rate can reach 90%～95%, higher than general reverse osmosis system.
E. the reverse osmosis film group device is equipped with regular flushing, cleaning system and medicine system (comprising Scale inhibitors, reductive agent, sterilant).By wash-water pump, reverse osmosis produced water forward input reverse osmosis film group device is rinsed, added the non-oxide sterilant of about 200mg/L for alleviating the organic contamination of reverse osmosis in rinse water simultaneously.Feed water by reverse osmosis adds respectively 1～5mg/L Scale inhibitors and reductive agent, is respectively used to alleviate the fouling of face inorganics, and eliminates the oxygenizement of water inlet chlorine residue to reverse osmosis membrane.
The add-on of precipitation agent lime, soda ash is 10～50 mg/litre sewage, and the add-on of crystal aggregation agent polyacrylamide is 0.5～5 mg/litre sewage.
The processing method that the inferior zero discharge treatment device of sewage of the present utility model adopts, in chemical treatment, by adding specific precipitation agent (lime, soda ash etc.) and crystal aggregation agent (as polyacrylamide etc.), make various fouling tendency materials in water fully react, contact, collide, generate the suspended solids material, under the effect of crystal aggregation agent, make the complete crystallization of residual harness, form emulsion and do not precipitate, making it to the various fouling tendency materials in water and pollutent, stronger absorption and coagulation be arranged; By crossflow membrane filtration, thoroughly remove the metallic colloids such as hardness in water and iron, aluminium through chemically treated former water, overcome the impact on the fouling of RO film; Control water pH in specific scope, greatly reduce the condition of growing of bacterial micro-organism, effectively overcome the pollution to the RO film of bacterial micro-organism and organism.The ratio of desalinization of HCRO product water is greater than 97%, can fully recovering in industrial production; HCRO system recoveries rate can reach 90～95%, and concentrated water discharge is to the salt solution evaporation tank, thereby realizes inferior zero release.
The utility model is according to the characteristic of water, by water treatment device organic assembling such as chemical treatment, crossflow membrane filtration and reverse osmosis membrane separation, integrated water processing device, be mainly used in the advanced treatment and reclamation of trade effluent, the dense water of RO, cycle bleeder water, make system backwater rate reach 90～95%, reach quantity of wastewater effluent and minimize.
Claims (6)
1. the inferior zero discharge treatment device of a Novel sewage, it is characterized in that: comprise chemistry-membrane filtration treatment unit and high density reverse osmosis treatment device, described chemistry-membrane filtration treatment unit is connected with described high density reverse osmosis treatment device; Described chemistry-membrane filtration treatment unit comprises fast mixed device, mixed device, settling vessel, tubular ultra-filtration membrane device slowly, described fast mixed device, mixed device and described settling vessel are one-piece construction slowly, described settling vessel is connected with described tubular ultra-filtration membrane device with pump by pipeline, described tubular ultra-filtration membrane device is connected with pH-meter on the one hand, with settling vessel, is connected on the other hand; Described high density reverse osmosis treatment device comprises the feed water by reverse osmosis lift pump, cartridge filter, reverse osmosis high-pressure pump and reverse osmosis film group device, described feed water by reverse osmosis lift pump one end is connected with described pH-meter, the other end is connected with described cartridge filter, and described cartridge filter is connected with described reverse osmosis film group device by the reverse osmosis high-pressure water pump.
2. the inferior zero discharge treatment device of Novel sewage as claimed in claim 1 is characterized in that: described fast mixed device and mix slowly the stirrer that configures respectively different rotating speeds in device.
3. the inferior zero discharge treatment device of Novel sewage as claimed in claim 1, is characterized in that: be provided with sludge drainage system bottom described settling vessel.
4. the inferior zero discharge treatment device of Novel sewage as claimed in claim 1 is characterized in that: described fast mixed device, mixed device and settling vessel use strong corrosion resistant material glass steel to make slowly.
5. the inferior zero discharge treatment device of Novel sewage as claimed in claim 1, it is characterized in that: the internal diameter of the tubular ultra-filtration membrane in described tubular ultra-filtration membrane device is 5mm or 8mm, 0.04～0.08 micron of filtering accuracy; The cross-flow flow velocity is 2～5m/s.
6. the inferior zero discharge treatment device of Novel sewage as claimed in claim 1, it is characterized in that: the reverse osmosis membrane in described reverse osmosis film group device has the polymeric amide separating layer of cross-linking polyvinyl alcohol, it is the coiled reverse osmosis membrane with antifouling property, and the reverse osmosis membrane in described reverse osmosis film group device adopts than the dense water graticule mesh of ordinary RO membrane resistance low 15%, and dense aquaporin is greater than 34mil.
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|---|---|---|---|
| CN 201320394153 CN203360175U (en) | 2013-07-03 | 2013-07-03 | Novel sewage sub-zero discharge treatment device |
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|---|---|---|---|
| CN 201320394153 CN203360175U (en) | 2013-07-03 | 2013-07-03 | Novel sewage sub-zero discharge treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104761091A (en) * | 2014-01-07 | 2015-07-08 | 麦王环境技术股份有限公司 | Industrial concentrated brine zero-discharge treatment process and device |
-
2013
- 2013-07-03 CN CN 201320394153 patent/CN203360175U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104761091A (en) * | 2014-01-07 | 2015-07-08 | 麦王环境技术股份有限公司 | Industrial concentrated brine zero-discharge treatment process and device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Novel sewage sub-zero discharge treatment device Effective date of registration: 20161213 Granted publication date: 20131225 Pledgee: Huaxia Bank Limited by Share Ltd. Zhongguancun Beijing branch Pledgor: BEIJING SCINOR WATER CO.,LTD. Registration number: 2016990001094 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180209 Granted publication date: 20131225 Pledgee: Huaxia Bank Limited by Share Ltd. Zhongguancun Beijing branch Pledgor: BEIJING SCINOR WATER CO.,LTD. Registration number: 2016990001094 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
|
| CX01 | Expiry of patent term |